Paper-feeding machine



May 10, 1927.

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May l0, 1927.

Y n T. c. DEXTER PAPER FEEDrNc, MACHINE Filed July 29, 1925 6 Sheets-Sheet 2 n N Iy! lOl-l Illllll gvwentoz MM ci 2&5

y T. c. DEXTER PAPER FEEDTNG MACHINE Filed July 29 1925 6 Sheets-Sheet 5 May l0 1927 T. c. DEXTER PAPER FEEDING MACHINE Filed July 29 1925 6 sheets-Sheet 4 NNN T. C. DEXTER PAPER FEEDING MACHINE May 10, 1927.

Filed July 29. 1925 e sheets-sheet 5 i 1 w M Y Y n v M y V\\ u NQ QW N Y i i m E5 i Sv u Ri.. .i w 5;.. Nw l L l1@ $1 May lo 1927 T. c. DEXTER PAPER FEEDING MACHINE Filed July 29. 1925 s sheets-sheet 6 UNITED STATES PATENT OFFICE.l

TALBOT C. DEXTER, OF EEARL RIVER, NEW YORK.

PAPEB-FEEDING .MACHINE Application iled July 29, 1925. Serial No. 46.700.

This inventiorrelates to paper feeding machines and more particularly to that class of paper feeding machines wherein the paper feedinon cycle of operation is pneumatically controlled. A Y v Among the objects of the present invention is to produce pneumatically controlled devices which will lift a sheet of paper from a pile of paper and by such action cause said l" devices to advance thc sheet of paper a denite distance.

Another object of the invention is to provide a'latch whereby the forward movement of the advancing mechanism and the aC- companying advance 'of the sheet of paper is prevented 'until the forward edge of the Sheet of paper is'completely lifted from the remaining sheets of the pile of paper.

Another object is to rovide suction con- 2 trolledadvancingv mec ianism which vwill operate to lift a sinvle sheet of paper from y a pile of paper preiiminary to the advancing ymovement of said sheet of paper after there has been only a minimumamount of vseparation of said sheets Vof paper from the plie of paper by a comb-wheel.

Another object is.t0 provide' mechanism'.

which will cause a sheet of paper to adhere to it so that it may be advanced, and, 'at the same time, to cause advancement of said sheet 'of paper by auxiliary mechanism to cease by rendering said auxiliary mechanism ineffective when the'sheet of paper has come into contact with said advancing mechanism.

Another Objectis to provide means whereby the 'amount of forward movement of the' advancing mechanisml and accompanying forward movement of a sheet of paper, may be terminatedaften the paper. has been advanced a predeterminedl distance, and whereby the operation of auxiliary advancing mechanism may be automatically' resumed to be operative to cause separation-and preliminary` advance Vof the next succeeding sheet.

With these and incidental objectsin view, the invention consists ofcertai'n novel features of construction and combinations of parts, the essential elements of which are set forth in the appended claims and a preferred form 'of embodiment of which is def drawings which accompany and form part of the specification.

Fig. 1 1s. anelevationof the. right side ofV 55 the paper feeding machine.

Fig. 2 is an elevation ais-.viewed from the front of the machine, Withpartslfbrolken away. '-A

Fig. 3 is a longitudinal view'o'f the paper 60 feeding mechanisms,partly in sectiomteken on line 3-3'of Fig.-5.- I il Fig. 4 is a-view similar"t03,`fwith the parts in a position of thdfids'tadvanced position ofthe automatic papradvancing` mechanism'. Y Y

Fig. '5 isa plan view of the'paper 'feeding' machine illustrating one automatic-feeding unit. V

Fig. 6 is a detail of the variouscamsv and 70 the coacting rollers. i

Fig. 7 is a perspective view ofthe paper advancing head and its guiding rails. i

Referring to the drawings for a more de# tailed description of the machine, the paper feeding mechanism is supported on a-frame` comprising-left and 'right members `10Vand 11. vthe 'left frame being supported by two columns12-13, and the right'framebeing supported by two similar columns 14-15. 80 The columns 12-13, extend upwardly from a beam'`161andcolum ns 14`15extend upwardlyA from a beam 17, the beams being maintained inspac'ed relation by rods 18- 19. Frames 10w-11v -also are Vmaintained in -85 spaced relation by three r0ds20, 21 and'22.

In `the present form, power for the various shafts and mechanical units of the machine is derived' through'the medium of roller shaft 23 journaled-in the forward 90 ends .of frames, 10'and '11. The right hand end of this shaft carries a sprocket wheel 24 which Vmay be connected by`a. chain to a motor or any other source of power. This shaft will rotate continuously and causethe rotary parts of the machine to function continually, but the -pneumatic devices for advancing a shee't of paper are automatical- 1y controlled by the presence and actual feeding operation of the sheet of paper being fed.V

` To shaft 23 is secured a--pinion 25 which meshes with an idler gear 26 loosel on stub shaft 27.` 28 is the cam shaft to the right hand end of which is secured a gear 29 which meshes with idler gearr26. Another lidler gear 30 is loosely mounted on. stub shaft 3 1 extendipg from s i,de frame 11 and it engages'gear 292011 shaft 2 8 and drives shaft 32 throug "gear'33. A Y

The paper' feedlngunit, about to be described, receives its yoperating"power through .cam shaft 28 and shaft 32. For the purpose of simplifying the disclosure, only 'one ofA these paper feeding units; been illustrated, but it is to be understood thatwhere the occasion makes it desirable -aplurajlit-y efsimilar units vmay. be employed, as for exanple, where, inlarge, f nachines, wide lso loosely mounted on rock shaft 37 is an;

arm 38 having journaled-in its forwardend shaft 39 to'which-is. secured comb wheel 40. Arm 38 also carries a stub shaft 41 and-an dlerggear- 4 2 which-engages' gea 36 "and gear 43 on shaft 39. Comb-wheel ,40' will be rotated in a'clockwise direction byf'thc gearing ,just y described -ar'td its effectiveness tof-preliminarily advance a fsheet ofpap'er is dependent upon whether it vis 'in "contact withthe pile of paper 'or whether it is. re-

moved from contact by mechanism to bedescribed hereinafter.

To rame 34 is bolted a rail 44 on which a bloc '45 may be slid forwardly when a sheet ofpaperis to be advanced. The block carri'es a cylinder`46 vclosed at its fupper end .bya" cpp, 47 through which a passage is boredff-Fitted toslide within the cylinder is apistcn. comprising a Aheadj48 and a tube -49 whichjslides 'in-sleeve 50 extending from Vthe cylinder. To -the lower Aend of tube 49 is secured-afboss 51 having an'arm 52 which carries a roller 53. Pinned tothe same pin` 'as 'roller 53. is-a'link 54 having an elongated slot 'in which 'a` stud orly-arm 55 engages.

Arm 55 -is-pivoted on block 45 and itsv rear end ishookedso as to engagefstud 56 onl rail44 when the piston is 'in its' home ,position as illustrated invFig.- 3. A 'plate 57 havingperforations therein is fastened beneath boss 51.

A projection 58 of `the cylinder cap 47 terms agsuitable surface to which is fitted @flexible hose 59 which connects cylinder 46 withl cylinder 60 by c means of nozzle 61.

Tapped -into the rear end of cylinder 60 is vperiphery of cam 74 on shaft 28.

a hose 62 which is connected to a vacuum pump, not shown, which continually tends to draw air through the p'erforat-ions in plate 57, tube 49, cylindei=.46, flexible hose 59, nozzle 61, and cylinder"60.

When a sheet of paper is advanced from the pile of paper by the comb-wheel`40, the air entering tube 49 through the perforations in plate 57 creates a suction which lifts thc uppermost sheet Vtoward the plate. This actioncauses the sheet of paper` to cover and clse the perforations thereby creating a Avacuum pressure on the connecting passageways above described which serves to firmly maintain the sheet of paper against the under side of the plate. The reduced pressure in cylinder 46 will cause piston tube 49 'to be raised thus causing the lower end of the slot in link 54 to contact the stud on arm .55 and raise the arm out of latching 'relation with stud 56.

Meanwhile, the vacuum pressure createdonrock shaft 37; Y' Crank 65 has .integral therewith a finger 66 -which underlies a. projection 672- extending vlaterally from arm 38, andthe clockwise Aor rearward movement of crank causes arm 38 to be rotated clockwise thus raising the comb-wheel from contact with the pile of-paper. 3 v

' The outer end of rock haft 37 has pinned thereto a' hub 68froiii which ext-ends ya lug 69 which underliespiijhjection 67 extending laterally from arm` 38.1.v Extending upwardly from hub 68 is 'a-crank 70t-hat is connected l by a pin'l71fto a pitman '72 having a bifurcationn-at itsvforward end which engages can; shaft.:4v 28 'and serves to guide the pitman in its translating movement. carries a roller 73 which bears against the Shortly after comb wheel 4() has been raised by the rearward motion of piston 63.v the high pait of cam 74 passes beneath roller 73 and causes pitman 72 to be moved rearwardly. action causes hub 68 to .be rotated clockwise and this new position of lugl 69 directly beneath the new position of projection 67 on arm 38 insures the maintenance ofparin 38 in its raised position. t will be evident from the foiegoing description that should piston 63 fail to operate to raise the com b wheel, the comb wheel would be raisedrpositively by the coaction .of cam 74 against roller 73 on pitman 72.

With the piston tube 49 raised, as above described,` to its highest position arm will no longer engage stud 56 and block 45 will Ibe free to be slid forwardly on rail 44. 'Cam 75 on cam shaft'28 thereafter controls the reciprocation ot'block 45. YJournaled in side ThisV Pitman 72 y from beneath roller 78, the spring will urgeA arms 77 and 79 in a clockwise direction and moveblock 45 tothe position illustrated in lgvhl en more than one paper feeding unit is to be used only one cam and arm 77 is necessary, but 1t would then be necessary tohave as lmany arms 79, fixed to'sh'aft 76, as there are units, and shaft 76 could be longer for this purpose. The lower ends of the arms 79 each would be connected to each of the bloc'ks 45 .as above'described, and when the high part of cam 75 would pass from beneath roller 78 all of the blocks would be urged forwardly by the respectivel springs 83. The forward movement of all of the blocks would be delayed, however',4

should any one of the pistons 49 fail to completel1 rise, since, in that case, its latch 55 woul remain hooked to stud 456. Should the failure of the piston to completely rise be due to a lack of complete closure of the holes in the respective plates 57, lthe comb wheels wouldcontinue lto urge the paper forwardfand as soon as each set of holes in each plate wascovered all of the pistons would rise to the position illustrated in Fig.4 and each would be equally effective to hold and advance the pa er In this position, thehigh part of cam will passfrom beneath roller'86 and allow arm 87, loose -on shaft 76, to rotate-clockwise thereby removing linger 88 from restricting relation with plunger 89. pllvounger is mounted in a boss 90 extending m frame member- 34- and itv is continually urged upwardly by a compression spring 91 fitting into a recess in the boss and contacting a collar 92 fast to the plunger, The upward movement-of the plunger is limited by a collar 93 which bears against the under side of boss 90 when the spring is `allowed to raise the plungeras above described.

To the lower end .of plunger l89 is fastened a` track 94 against which a roller 95 on the forward end of lever 96 travels. VThe track is maintained in its proper position by two pins 97-97, which are fastened thereto and slide in holes in boss 90. Lever 96 is pivoted'on a bracket carried by block 45 and roller is continually urged in a clockwise direction by. spring 98. j To the rear end of lever 96 isa valve-cap 99 which covers a port 100 in cylinder 46 when the This' parts are in the positions illustrated in Fig. 3.

However, after the block has been moved forward and cam 85 has allowed arm 87 to drop and plunger 89 andl track 94 to rise, Fig. 4, spring 98 will'fimction to rot-ate lever 96 and remove valve-cap 99 from port 100. This action will cause a release of the vacuum pressure in cylinder 46, and -the sheetof paper willl no longer be held to the under surface of plate 57. Piston tube 49 will not descend for roller 53 is above bar 101 and it will maintain the piston tube and its associated parts in their raised position until the block has been moved to its home position where the roller will leave the end 1021 of the bar 101 andallow the piston tube to drop to the position shown in Fig. 3.

When the' vacuum pressure is broken in cylinder 60,-the restraining e'ect of crank 65 onarm 38 will cease but the comb wheel will not drop until the high portion of cam 74 has passed from beneath roller 73 on pitman 72.

102 is a rock shaft journaled in side frames 10 and 11 and it has pinned thereto two arms 103 each carrying a friction roller 104 atr its end. These rollers are situated directly above feed roll 105 on shaft 23 and normally are restrained from contact therewith bya cam 106 at the rightvend of shaft 28'. This cam controlsv the rise 4and fall of rollers 104 through a roller 107 which 'is carried by the rear end of arm ,108, pinned to rock shaft102.l

While the block is in its forward posi'- tion over shaf 23. and after the valve-cap 99 has been removed from port 100, cam 106 will have been' rotated enough to allow friction rollers 104 to descend upon the sheet of Vpaper that has been advanced by the block and released from the under side of plate 57 The sheet of paper will vthen be rapidlyadvanced by the feed 'roll 105 and discharged from the machine. Further rotation of shaft 28 will cause cam 106 Vto raise arm 108, rock shaft 102, and raise friction'rollers 104.\ Cam 75 will `then o crate to swing arm 77, shaft 76, and arm 9 counterclockwise against the action of spring 83 to restore block 45 to home position; and just about when the block has arrived at its home position, cam 85 will Vraise arm 87 and cause. finger 88 to depress plunger 89 and track 94 so as to restore valve ca 99 in its position over port 100, Fig. 3. am 74 will now allow pitman 72 to move forwardly and comb wheel 40'will descend to the surface sheet of the pile of paper and proceed paper be caused to adhere thereto bythe suction through the holesv in the plate. The use of- Athe nozzle in this manner 'allows rapid :operation of.the machine, as it is only necessary. that-.thtopsheetbe advanced a very slight, distance,y by the comb wheelaheadof-A the .sheets immediately thereunder 4betere 'the suction -platecan grasp it, softe speak, Aandi automatically. .opeiate to' lift the; sheet.

'As the paperis advanced bythe forward movement of block its own -forward movement .will be assisted by Yits passage over `a feed-m9111114 mounted-on shaft 11'5-which is nism for actuating thehead lto advance the paper after suchcessation.

3. A paper feeding device comprising a movable hollow head havingports-ffor 'causing paperv toadhere thereto, means to..ad

vance a sheet.of paper in proximityto saidy ports, connectionsvbetween said holzbow head and said means for rendering said means ineffective to advance paper when` a sheet of:

paper is held by said hollow head,.andgmech 4anisin for actuating the head to carry the journaled in frames'lO and 11, Shaft 115 is driven by shaft- 23 which carries at its left end a gear 116 which is in engagement with zin-.idler gear 117, loosely mounted on tube 109. This gea-r meshes with gear118 fast on shaft 115; and completes the driving connection between shafts 23 and 115.

Iii order to clarify the ldescription of the machine, the timing `of the various cam actions in relation to one another has been set forth, but Iv desire it to be understood that the timing relations. can be varied to suit the operator of the machine and to accommodate the 'machine to feed the different grades of paper for which itis to be used.

In this type of .machine the paper lis stacked upon a table 119 and this table is raised automatically by mechanisms designed-for thispurpose and which are well known inthe art. It is only necessary that the surface of the pile of paper be maintained' within contacting distance of the comb wheel. .l

While the forni of mechanism herein 'shown and described is admirably adapted to fulfill the objects primarily 'stated,.1t is to be understoodtha't 'it' is not intended `to confine the invention to the one form of.

the scope of the appendedv adhering paper forward.;

4. Al paper feediiigadevice comprising a movable hollowihe'ad'havihg ports for causf ing paper .to'adhere.thei'eto, means to ad- 'vance a sheet of paperiin proximity to said ports, connections between said hol-low head and said means for automatically. rendering said means ineiiectiveto advancepaper concomitantly with the .picking up of a sheet of paper by said hollow head; and devices for operatingfhead to advance the paper fed by said means.

5. A paperfeedingdevice comprisinga movable hollow head-having vports for causing paper to adhere thereto, means .to sepas rate the top .sheets of paper fnom a pile of paper,"means to automatically discontinuev the efective operation of said first menitioned= means `when a. sheet of paper is picked up b the suctionzat the .ports of said -hollow hea and means for moving said head to advance paper iied'by .said.=means.

6. A paper feeding device 4comprising a tube having a. suction chamber therein and perforations adapted to draw a sheet of paper thereto and means foroperating said ead advance the paper, acomb wheel ,for advancing sheets ofpaper' toward said. perforations, and means for discontinuing the effectivene of Asaid comb wheel Vwhen the f most advancedsheet bysaid tube. l

' 7. A paper'ffeeding device comprising a tube having `a suction chamber-therein and perforations adapted to draw a` sheet of paper thereto, a combwheel to separate the uppermost sheets -of avpile of paper, means to withdraw said comb wheel from contact with said pile of paper lwhen a sheet of paper is caused to adhere to said tube, and means for thereafter .actuatingthe suction device .to advance and release-the paper.

of paper is picked up 8. A paper .zfeeding device comprising aY tube and perforations through lwhich air .may be drawnfso as to cause :paper to adhere 2. A paper feeding device comprising a.

thereto, a comb wheel' for separating the sheets ofv 'per rfrcm .a pile of paper and advancingt e vuppermost sheet toward said tube, and means for thereafter bodily movingA the suction device to carry the paper away from the comb wheel.

9. A paper feeding device comprising a tube and "perforations through which air may be drawn so as to cause paper to adhere thereto, a comb wheel for separating the sheets of`paper from a pile of paper, auto'-V matic means for withdrawing said comb wheel from said pile of paper when the foremost sheet of paper is picked upv by said tube, and means for thereafter moving said tube to carry forward the `adhering paper and for releasing the suction to free said paper after it is fed.'

10. A- paper feeding device comprising a bodily movable suction cylinder having a piston head therein, a tube attached to said piston head, a A plate having perforations therein covering the external end of said tube, a comb wheel for advancing paper toward -said plate, pneumatically cont-roll'd means to terminate the effectiveness of-said comb wheel when a sheet of paper is held against the erorations in said plate, and

devices for odily moving the cylinder tov carry the paper' forward after the comb wheel becomes ineffective.

' 11. A paper feeding device comprising a bodily movable suction cylinder havinga piston head therein, a tube attached to said piston head, a plate having perforations therein covering the external end of said tube, a comb wheel for advancing paper' toward said plate, means connected to said comb wheel for removing it from coacting relation with said paper, said means being yadapted to automatically operate when a sheet of paper is advancedv opposite said perforations, and means for thereafter moving the suction cylinder to feed the paper and then release the suction.

12. A paper eeding'device -comprising a block, a cylinder mounted on said block, a

rail for guiding said block in a translatory movement, a hollow piston adapted to reciprocate in said cylinder, and a plate having. perforations and moving with the piston, said hollow piston being adapted to be drawn into said cylinder when the perforations in said plate are covered by a sheet of paper.

13. A paper feeding, device `comprising a block, a cylinder mounted on said block, a rail for guiding said block Vin a translatory movement, a hollow piston" in said cylinder, a conduit for drawing air from said cylinder, said hollow piston being adapted to cause a sheet of paper to adhere thereto and close its open endwhereby said hollow piston is caused to rise and lift said sheet of paper, and a latch controlled by the piston 14. A paper feeding vdevice comprising a block, a cylinder mounted Qn said block, a rail for guiding said block in a translator-y movement, a hollow piston in'said cylinder, a comb wheel for advancing paper toward said'hollow piston, a, second cylinder, a piston in said second cylinder connected tosaid comb wheel, a tube communicating with said two cylinders'for drawing air therethrough to actuate said Vpistons-when a sheet of paper closes the opening in said hollow piston.

15. A paper feeding device comprising a block, a cylinder mounted on said block, a rail for guiding said block in a translatory movement, a hollow piston in said cylinder, a passageway whereby air may be evacuated from said cylinder, a hook lonfsaid block for maintaining it in a definite position on said rail, and means to'unlatch said hook when Y said hollow piston is actuated.

16. A paper feeding device comprising a block, a cylinder mounted on said block, a rail for guiding said block in aA translatory movement, a hollow piston -in said cylinder,

a passageway whereby air may be evacuatedfromA said cylinder, an opening in said hollow piston adapted to be closed by a sheet of paper and thereby cause said piston to be actuated, means to actuate said block along said rail and advance said sheet of paper, a latch controlling movements of the afore said block and operating connections for the latch actuated bythe piston.

A17. A paper feeding device comprising a block, a cylinder mounted on said block, a

rail for guiding said block inlaltranslatory movement, a hollow piston in said cylinder, a passageway whereby air may be evacuated from said cylinder, means controlled by the sheets of paper being fed for causing said piston to be actuated, a latch for Vlocking said block in a definite position on said rail, and means to release said4 latch when said piston is actuated.

18. A paper feeding device comprising a block, a cylinder mounted on said block, a rail for guiding said block in a translatory movement, a hollow piston in said cylinder,

a passageway whereby air may be evacuated rail'for guiding said block in a translatory movement, a hollow piston in saidcylinder, a passageway whereby air may be evacuated les from said cylinder, means controlled by..

passing sheets of paper for actuating-the piston, a valve-cap for covering a port in said cylinder, and means Vto remove said valve-cap j from `said portIl to cause they re- Inovement, ahollow piston in said cylinder,

a passageway whereby airma-y be evacuated from said cylinder, means controlled by the passing sheetsof paper for) actuating the` piston, a valve-cap for coveringr a port in said cyllnder, means to advance saidblock valve-cap 'from' said poit afterI said blockhas lbeen advanced a predetermineddistance.

21.' A paper feeding device comprising.' a block adapted 1to bey reciprocated lupon arail, sai lilt'ck carrying a chamber havingaeport therein, avalve-cap for normally covering said port, connections lforevaouating the alfr -froin said clianiber, a hollow piston whereby airy may be drawn into vsaid chamber, means whereby sheets of pa er are successively fed towards the open en;A of said hollow piston, said sheets ofpaper serving to close said open end land causeA said hollow piston to hold and raise the sheets of p 'a r, means for advancing Said block and ais eet of paper, and means for operating'said valve-capte uncover said portland cause the release of said paper. i

22". A paper feeding device comprismgga block adapted tolbe 'reciprocated uponl a rail, said block` carryingaY chamber havinga port therein, a vakje-capV for 'normally covering said port, connections for evacuating the air 'from said chamber, a hollow piston whereby air'may bedrawn into said chamber, means whereby sheetsof paper are successively fed towards the open end vof said hollow piston, saidjsheets of paper'serving to close said open end and cause said hollow pistonto holdV and raise'the sheets ofpaper,

means for 'advancing said block and a sheet of paper, and means for removingr said valve-cap from said portlto cause the release of said sheet'of paper and the discontinuance of the' effective oper-ation of's'aid first namedmeans.

23. In a paper feedin machine, the combination of a suction cy Inder, 'a hollow piston adapted to be drawn therein by' suction,

a`plate having ports'over thefend of said hollow piston, a nozzle for directing a current of -airtowards said ports,'and means to feedtheuppermost `sheetsof a pile of paper toward said`nozzle whereby the uppermost sheet is lifted against said plate by the Acurrent of lair.

24. In a paper feeding machine, the combination of a suction cylinder, a hollow piston adapted to be drawn therein by suction, a plate having ports over the end of said hollow piston, a comb wheel for brushing the uppermost sheets of paper toward said ports in said plate, and a nozzle for direct- ,Legales ing a current of airto `raise the front end of the uppermost .sheet of paper into Contact with said plate.

25. In a papel; feedingnmchine, the combination'of a suction cylinder, a hollow piston adapted to be drawntherein by suction, a 'plate-having ports over the end of said hollow piston,a comb wheel for brushing the uppermost sheets of paper toward said ports in said plate, a second cylinder, means in said second cylinder connected to said comb wheel, a` passagewayv connecting said cylinders, and amnozzle for lifting a sheet of paper 'to cover the ports in said plate whereby the suction create'dop'erates tosdraw the hollow piston into said 'lrst named cylinder and simultaneously terminate the"br,u`sl1ng operation ofv said comb wheel. 26.' A paper feeding apparatus comprising a continuously driven comb ywhee'lv'and means fo'r intermittently 'moving it` 'into and out Iof feeding contact with'the successive sheets of paper which are to'be fed', mechanism comprising a suction'deviceopeiablc to lift and feed onwardthe papefedbythe comb wheel, and devices-pneumatically` controlled by the suction device for eflelctinJ kthe intermittent movements of, thecnnbl w eel. 27. A paper feeding apparatnl'si'inluding a rst feeding mechanls'ln'colnpising acoinb wheel, devices for intermitteitl 1 'pefating the comb wheel to feed sheets o [paperV art of the way off of fa stack, av'second fee, mechanism comprising a suction'devi'ceffor lifting the sheets fed by the combwheel and advancing them to. complete 4the feeding movement of the sheets, and devices 'controlled by the suctiondeviceforjregulatinv the sequential operations of `l the tirstan second feeding mechanisms. 'i

a first feedingmechamsm comprisingJ 'a icomb wheel, devicesy for' operating the comb wheel to feedl sheetsl off paper successively 'artf'f the xway olf of a stack, a second ceding mechanism comprising a. suction device for liftingthe sheets fed bythe 'comb wheel and adgancing them to 'complete the feeding movement of the sheets and devices comprising a latch controlledby the ysuction device for effecting operations of-'the second, feeding mechanism in a timed relation with reference tothe feeding of the comb wheel.

29. A. paper''feedingi apparatus including a fir'stfeedingmeehanism comprising a comb pulsing,alat"lij'contrelledfby the suction device for preventingoperation of the second 28. A paper feedingapparatus including feeding mechanism until a sheet has been fed initial operation of the second feeding mechl thereto by the first feeding mechanism. anism will render the c omb Wheel ineffective 1 80. A-paper feeding apparatus including to feed paper until the feeding operation of a comb wheel and means for operating it to the second feeding mechanism `is completed. 5 feed sheets of paper Afrom a stack, a second In testimony whereof I hereto affix my feeding mechanism rendered effective to lfeed signature.

the 'apeiby en agement therewith of sheetsv fed y the com wheel, and means whereby TALBOT C. DEXTER. 

